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Aluminum and oxygen react to form aluminum oxide.

4 Al + 3 O2 2 Al2O3

a. What is the limiting reactant if 36.4 g Al are reacted with 36.4 g of O2?


b. What is the theoretical yield of Al2O3, in grams?

68.8 g

c. If 22.2 g of Al2O3 are obtained, what is the percent yield?


  • chemistry -

    I think the limiting reagent is Al.
    Your 68.8g, however, is correct for theoretical yield of Al2O3 which means you must have used 36.4g Al to solve for g Al2O3.
    The limiting reagent is the substance that is completely used.
    %yield is correct.

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